public class Example3_7 {
  public static void main (String args[]){
	int sum=0,i,j;
	for(i=1;i<=10;i++){
	  if(i%2==0){
		continue;
	  }
	  sum=sum+i;
	}
	System.out.println("sum="+sum);
	for(j=2;j<=100;j++){
	for(i=2;i<=j/2;i++){
	  if(j%i==0)
	    break;
	}
	if(i>j/2){
	  System.out.println(""+j+"是素数");
	}
	}
  }
}
